The Royal Navy has unveiled its new £850million defence system able to fire rockets at 2,300mph amid warnings of a threat from Russian warships and heavily-armed pirates.

The Sea Ceptor missile system will be deployed on board the Navy's Type 23 frigates and is said to be able to deal with multiple targets at the same time, protecting an area of around 500 square miles over land or sea.

Unveiling the rockets, First Sea Lord Admiral Sir Philip Jones said that as well as the naval challenge from other countries, such as the Russian fleet, there is an increasing threat from "non-state actors".

Admiral Sir Philip said the UK is still around three years away from being able to deploy HMS Queen Elizabeth equipped with F-35B jets supported by escort vessels.

Sea Ceptor, a world-class missile system, will protect the Royal Navy's new aircraft carriers (
Image:
WENN.com)
The Sea Ceptor missile defence system will be able to defend against rockets travelling at 2300mph (
Image:
Royal Navy)
HMS Montrose became the third ship to test fire the system (
Image:
WENN.com)

"We are envisaging at the moment an operational deployment of a full carrier strike group - this, of course, will include the frigates armed with Sea Cceptor, the air-defence destroyers, the tankers, the submarines, in about three years' time," he said.

Setting out the need for the new technology, he added: "It's an evolving threat, it's there now from nation states who are capable of contesting Western navies at sea ... the Russians are clearly one of the predominant forces there.

"But also we are seeing a divergent threat - non-state actors are gaining increasing access to high-end capability that they can contest sea space with, and we need to be able to counter that, such that we can put the carriers into a place where they can achieve effect and do so safely."

The Sea Ceptor system will be able to defend against a growing threat from Russia, and non-state actors, the navy said
Piracy is one element of the threat, First Sea Lord Admiral Sir Philip Jones added

He told BBC Radio 4's Today programme that piracy is one element of the threat, but there is also a challenge from groups which are "proxies" for other states, highlighting the Iran-backed Houthi rebels in Yemen.

"They have gone from no maritime capability at all to serious high-end anti-ship missiles, mine-deploying threats and the ability to detect contacts at sea, all in the last two years."

MPs have warned about potential cuts to the fleet's capabilities, but the Admiral said "we are increasingly getting the Navy that we need" through a "significant piece of modernisation".

HMS Argyll will be the first ship to deploy with the system

Amid concerns about the future of the Navy's ability to land Royal Marines on enemy beaches, he said: "We need to keep an amphibious capability in the Navy as we go forward, and, as we recapitalise every other bit of the fleet, we need to recapitalise that as well."

HMS Argyll will be the first ship to deploy with the system when she heads to the Asia Pacific region later this year.

Sea Ceptor is being fitted to replace the Sea Wolf system on the Type 23 frigates.